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CC490K Brass vs. CC497K Bronze

Both CC490K brass and CC497K bronze are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 82% of their average alloy composition in common.

For each property being compared, the top bar is CC490K brass and the bottom bar is CC497K bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 76
55
Elastic (Young's, Tensile) Modulus, GPa 110
93
Elongation at Break, % 15
6.7
Poisson's Ratio 0.34
0.36
Shear Modulus, GPa 40
34
Tensile Strength: Ultimate (UTS), MPa 230
190
Tensile Strength: Yield (Proof), MPa 110
91

Thermal Properties

Latent Heat of Fusion, J/g 190
160
Maximum Temperature: Mechanical, °C 160
130
Melting Completion (Liquidus), °C 980
870
Melting Onset (Solidus), °C 910
800
Specific Heat Capacity, J/kg-K 370
330
Thermal Conductivity, W/m-K 72
53
Thermal Expansion, µm/m-K 19
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 16
9.0
Electrical Conductivity: Equal Weight (Specific), % IACS 16
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 30
29
Density, g/cm3 8.8
9.3
Embodied Carbon, kg CO2/kg material 2.9
3.0
Embodied Energy, MJ/kg 47
48
Embodied Water, L/kg 340
370

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 28
10
Resilience: Unit (Modulus of Resilience), kJ/m3 54
45
Stiffness to Weight: Axial, points 6.8
5.5
Stiffness to Weight: Bending, points 18
16
Strength to Weight: Axial, points 7.3
5.6
Strength to Weight: Bending, points 9.5
7.8
Thermal Diffusivity, mm2/s 22
17
Thermal Shock Resistance, points 8.2
7.2

Alloy Composition

Aluminum (Al), % 0 to 0.010
0 to 0.010
Antimony (Sb), % 0 to 0.3
0 to 0.75
Copper (Cu), % 81 to 86
67.5 to 77.5
Iron (Fe), % 0 to 0.5
0 to 0.25
Lead (Pb), % 3.0 to 6.0
18 to 23
Manganese (Mn), % 0
0 to 0.2
Nickel (Ni), % 0 to 2.0
0.5 to 2.5
Phosphorus (P), % 0 to 0.050
0 to 0.1
Silicon (Si), % 0 to 0.010
0 to 0.010
Sulfur (S), % 0 to 0.1
0 to 0.1
Tin (Sn), % 2.0 to 3.5
4.0 to 6.0
Zinc (Zn), % 7.0 to 9.5
0 to 2.0